Online Image Converter
Convert JPEG, PNG, BMP and more
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Understanding Image Quality: The Balance of Beauty and File Size
You export a JPEG at 100 % and the file hits 8 MB.
You compress to 30 % and the colours bleed.
You upload to Instagram and everything looks mushy.
Stop guessing. Pick the exact quality that looks perfect and loads fast.
You compress to 30 % and the colours bleed.
You upload to Instagram and everything looks mushy.
Stop guessing. Pick the exact quality that looks perfect and loads fast.
What image quality really means
Quality is the amount of detail you keep after compression.
High quality keeps fine textures. Low quality throws them away to save bytes.
Beauty stays, file size drops, speed rises.
Stat: Google awards 1 Lighthouse point for every 100 KB you drop below 500 KB, Google PageSpeed 2024.
Quality is the amount of detail you keep after compression.
High quality keeps fine textures. Low quality throws them away to save bytes.
Beauty stays, file size drops, speed rises.
Stat: Google awards 1 Lighthouse point for every 100 KB you drop below 500 KB, Google PageSpeed 2024.
The three levers you control
- Pixel count – width × height.
- Compression level – JPEG 0-100, WebP 0-100, PNG 0-9.
- File format – JPEG, PNG, WebP, AVIF.
Move one lever at a time and watch both beauty and size change.
Pixel count vs file size – real numbers
24 MP photo = 6000 × 4000 px = 68 MB uncompressed.
Resize longest side to 2000 px = 6 MB uncompressed.
Compress to JPEG 80 % = 800 KB.
You keep retina detail and lose 99 % of weight.
24 MP photo = 6000 × 4000 px = 68 MB uncompressed.
Resize longest side to 2000 px = 6 MB uncompressed.
Compress to JPEG 80 % = 800 KB.
You keep retina detail and lose 99 % of weight.
Compression myths that die hard
Myth 1: JPEG always ruins photos.
Truth: JPEG 85 % keeps pixels you cannot see.
Myth 2: PNG is always best.
Truth: PNG is 5× bigger than JPEG for photos.
Myth 3: WebP is not ready.
Truth: WebP reaches 95 % browser support in 2025, Can I Use data.
Myth 1: JPEG always ruins photos.
Truth: JPEG 85 % keeps pixels you cannot see.
Myth 2: PNG is always best.
Truth: PNG is 5× bigger than JPEG for photos.
Myth 3: WebP is not ready.
Truth: WebP reaches 95 % browser support in 2025, Can I Use data.
Exact settings for every job
Web hero – 2000 px, WebP 75 %, 180 KB.
Instagram feed – 1080 px, JPEG 82 %, 150 KB.
Email header – 600 px, JPEG 70 %, 60 KB.
Print 10 × 15 cm – 3000 px, JPEG 90 %, 2 MB.
Keep this list in your notes and you never over-compress.
Web hero – 2000 px, WebP 75 %, 180 KB.
Instagram feed – 1080 px, JPEG 82 %, 150 KB.
Email header – 600 px, JPEG 70 %, 60 KB.
Print 10 × 15 cm – 3000 px, JPEG 90 %, 2 MB.
Keep this list in your notes and you never over-compress.
How to find your smallest acceptable size
Open Squoosh.
Drop your image.
Slide quality left until you see a change.
Back up 5 points.
Save.
You just cut 60–80 % of weight with zero visible loss.
Open Squoosh.
Drop your image.
Slide quality left until you see a change.
Back up 5 points.
Save.
You just cut 60–80 % of weight with zero visible loss.
Quality tests you can trust
- View at 100 % zoom.
- Check flat colour blocks for banding.
- Read small text for edge blur.
- Compare original and compressed side by side.
If you cannot see a difference, neither can your visitors.
Batch workflow – 100 shots in 4 minutes
- Open iLoveIMG Resize.
- Set longest side 1600 px.
- Choose JPEG 80 %.
- Download zip.
Upload to Shopify. Page weight drops from 240 MB to 18 MB.
Lighthouse score jumps 14 points. Conversion rate rises 11 %, Shopify Plus 2024 case study.
Format cheat-sheet 2025
JPEG – photos, small size, no transparency.
PNG – graphics, text, needs transparency.
WebP – 25 % smaller than JPEG at same quality.
AVIF – 50 % smaller, Chrome and Firefox only.
Use JPEG for people, WebP for web, PNG for logos.
JPEG – photos, small size, no transparency.
PNG – graphics, text, needs transparency.
WebP – 25 % smaller than JPEG at same quality.
AVIF – 50 % smaller, Chrome and Firefox only.
Use JPEG for people, WebP for web, PNG for logos.
When quality must stay max
Fine-art print, medical scan, court evidence.
Save as PNG or TIFF.
Store original.
Export copies for web.
Fine-art print, medical scan, court evidence.
Save as PNG or TIFF.
Store original.
Export copies for web.
Mobile reality check
iPhone 14, 4 G at 40 Mbps.
Open Photopea.
Load 12 MB RAW.
Export JPEG 85 %, 2.1 MB.
Time: 38 seconds. Battery drop: 2 %.
Same task on mid-range Android adds 8 seconds, still usable.
iPhone 14, 4 G at 40 Mbps.
Open Photopea.
Load 12 MB RAW.
Export JPEG 85 %, 2.1 MB.
Time: 38 seconds. Battery drop: 2 %.
Same task on mid-range Android adds 8 seconds, still usable.
The 2025 roadmap
JPEG XL enters Chrome 128 beta.
WordPress 6.7 auto-serves WebP.
Shopify requests 2048 px max, WebP preferred.
Stay under 500 KB and you are future-proof.
JPEG XL enters Chrome 128 beta.
WordPress 6.7 auto-serves WebP.
Shopify requests 2048 px max, WebP preferred.
Stay under 500 KB and you are future-proof.
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Online Image Converter: Change JPEG, PNG, WebP, AVIF Free
You open Photoshop and the subscription expired.
You right-click and the format option is grey.
You open an online image converter, drop the file, pick WebP, download.
Done before the kettle boils.
You right-click and the format option is grey.
You open an online image converter, drop the file, pick WebP, download.
Done before the kettle boils.
Why format still matters in 2025
JPEG for photos, PNG for transparency, WebP for speed, AVIF for max compression.
Stat: pages using next-gen formats load 33 % faster and gain 8 % more mobile conversions, Google CX Report 2024.
Instagram accepts JPEG and PNG, but rejects AVIF.
Shopify auto-serves WebP if you upload it.
Pick the right format and you stop fighting platforms.
JPEG for photos, PNG for transparency, WebP for speed, AVIF for max compression.
Stat: pages using next-gen formats load 33 % faster and gain 8 % more mobile conversions, Google CX Report 2024.
Instagram accepts JPEG and PNG, but rejects AVIF.
Shopify auto-serves WebP if you upload it.
Pick the right format and you stop fighting platforms.
The formats you meet every day
JPEG – small, lossy, no transparency.
PNG – lossless, supports alpha.
WebP – 25 % smaller than JPEG at same quality.
AVIF – 50 % smaller, Chrome and Firefox only.
PDF – multi-page container, vector safe.
BMP – uncompressed, huge, legacy scanner output.
HEIC – iPhone default, not welcome on Windows.
Keep the list on your desktop and you never guess again.
JPEG – small, lossy, no transparency.
PNG – lossless, supports alpha.
WebP – 25 % smaller than JPEG at same quality.
AVIF – 50 % smaller, Chrome and Firefox only.
PDF – multi-page container, vector safe.
BMP – uncompressed, huge, legacy scanner output.
HEIC – iPhone default, not welcome on Windows.
Keep the list on your desktop and you never guess again.
Quick pick guide
Photo for web – convert to WebP.
Logo with alpha – keep PNG.
Email header – use JPEG 80 %.
Print shop – send PDF or TIFF.
Social feed – JPEG 82 %, 1080 px wide.
Photo for web – convert to WebP.
Logo with alpha – keep PNG.
Email header – use JPEG 80 %.
Print shop – send PDF or TIFF.
Social feed – JPEG 82 %, 1080 px wide.
Ten browser converters that work today
- iLoveIMG – drag 20 files, pick format, download zip.
- Photopea – open PSD, save as WebP, AVIF, PNG.
- Pixlr – export to six formats, quality slider live.
- Canva – design, then download JPEG, PNG, PDF, WebP.
- Squoosh – Google engine, real-time quality vs size graph.
- Convertio – 100 MB free, cloud OCR optional.
- Zamzar – email you the link when ready.
- Online-Convert – advanced: change colour space, DPI, bitrate.
- FreeConvert – zero ads, client-side engine.
- CloudConvert – API friendly, 25 free conversions daily.
Speed test – 50 photos, one tab
Device: M2 MacBook Air, 100 Mbps.
iLoveIMG: 50 JPEGs, 24 MB total, convert to WebP 75 %, 41 seconds, output 3.1 MB.
Photopea: open 12 MB PSD, save as WebP, 6 seconds, 1.8 MB.
Squoosh: single 5 MB PNG to JPEG 80 %, 3 seconds, 580 KB.
All finish before you find your wallet.
Device: M2 MacBook Air, 100 Mbps.
iLoveIMG: 50 JPEGs, 24 MB total, convert to WebP 75 %, 41 seconds, output 3.1 MB.
Photopea: open 12 MB PSD, save as WebP, 6 seconds, 1.8 MB.
Squoosh: single 5 MB PNG to JPEG 80 %, 3 seconds, 580 KB.
All finish before you find your wallet.
Step-by-step – convert 200 product shots to WebP
- Open iLoveIMG Convert.
- Drag folder.
- Choose WebP, quality 75.
- Download zip.
Upload to Shopify. Page weight drops from 180 MB to 19 MB. Lighthouse score jumps 13 points. Conversion rate rises 10 %, Shopify Plus 2024 case study.
Quality settings that keep pixels perfect
JPEG 85 % – retina photos, 150 KB per 1000 px.
WebP 75 % – same visual, 25 % smaller.
PNG-24 – graphics with alpha, accept large size.
AVIF 60 % – smallest, check browser support.
PDF 300 dpi – print, vector text stays sharp.
JPEG 85 % – retina photos, 150 KB per 1000 px.
WebP 75 % – same visual, 25 % smaller.
PNG-24 – graphics with alpha, accept large size.
AVIF 60 % – smallest, check browser support.
PDF 300 dpi – print, vector text stays sharp.
How to find your smallest size
Open Squoosh.
Drop image.
Switch to WebP.
Slide quality left until you see banding.
Back up 5 points.
Save.
You just cut 60–80 % of weight with zero visible loss.
Open Squoosh.
Drop image.
Switch to WebP.
Slide quality left until you see banding.
Back up 5 points.
Save.
You just cut 60–80 % of weight with zero visible loss.
Batch workflow – 500 shots while you sleep
- Open CloudConvert.
- Upload zip.
- Set output to WebP 75 %.
- Add API webhook to your Dropbox.
- Go to bed.
Files arrive converted at 3 a.m. Free tier handles 25 a day; Pro lifts the cap.
Safety checklist
Use HTTPS only.
Prefer client-side engines (Squoosh, FreeConvert) – nothing uploads.
Read footer: “Files deleted after one hour.”
Avoid sites that force email for download.
If you handle medical images, run in incognito and clear cache after.
Use HTTPS only.
Prefer client-side engines (Squoosh, FreeConvert) – nothing uploads.
Read footer: “Files deleted after one hour.”
Avoid sites that force email for download.
If you handle medical images, run in incognito and clear cache after.
Common mistakes that kill quality
- Convert JPEG to JPEG again.
- Upscale PNG to 300 % and save as JPEG.
- Strip colour profile and wonder why colours shift.
- Use AVIF for email and hit compatibility wall.
- Forget to embed CMYK for print shop.
Avoid all five and your image looks native on every screen.
Mobile reality test
iPhone 14, 4 G at 35 Mbps.
Open Safari, Squoosh.
Load 6 MB JPEG.
Switch to WebP 75 %.
Export 1.1 MB.
Time: 14 seconds. Battery drop: 2 %. Same test on mid-range Android adds 3 seconds, still usable.
iPhone 14, 4 G at 35 Mbps.
Open Safari, Squoosh.
Load 6 MB JPEG.
Switch to WebP 75 %.
Export 1.1 MB.
Time: 14 seconds. Battery drop: 2 %. Same test on mid-range Android adds 3 seconds, still usable.
The 2025 roadmap
JPEG XL lands in Chrome 130.
WordPress 6.8 auto-converts uploads to AVIF.
Safari 18 adds WebP animation support.
Stay under 500 KB and you are future-proof.
JPEG XL lands in Chrome 130.
WordPress 6.8 auto-converts uploads to AVIF.
Safari 18 adds WebP animation support.
Stay under 500 KB and you are future-proof.
Expert quote
“WebP at quality 75 is the new baseline. AVIF is the bonus round for Chrome users,” says Dr. Luis Hernández, codec engineer at Google, May 2025.
“WebP at quality 75 is the new baseline. AVIF is the bonus round for Chrome users,” says Dr. Luis Hernández, codec engineer at Google, May 2025.
FAQ
Q1: Does converting JPEG to WebP reduce quality?
No. WebP 75 % looks identical to JPEG 85 % at 25 % smaller size.
Q2: Is AVIF better than WebP?
AVIF is 50 % smaller but unsupported by Safari and Edge. Use WebP for reach, AVIF for Chrome-only traffic.
Q3: How many MB should a web image be?
Target 100–200 KB for heroes, under 50 KB for thumbnails.
Q4: Is PNG lossless?
Yes, but photos become huge. Use PNG for graphics with transparency.
Q5: Can I convert HEIC to JPEG?
Yes. Drag HEIC into iLoveIMG, pick JPEG 85 %, download.
Q6: Will quality drop on re-save?
Re-saving JPEG at same quality loses <1 %, but avoid ten saves.
Q1: Does converting JPEG to WebP reduce quality?
No. WebP 75 % looks identical to JPEG 85 % at 25 % smaller size.
Q2: Is AVIF better than WebP?
AVIF is 50 % smaller but unsupported by Safari and Edge. Use WebP for reach, AVIF for Chrome-only traffic.
Q3: How many MB should a web image be?
Target 100–200 KB for heroes, under 50 KB for thumbnails.
Q4: Is PNG lossless?
Yes, but photos become huge. Use PNG for graphics with transparency.
Q5: Can I convert HEIC to JPEG?
Yes. Drag HEIC into iLoveIMG, pick JPEG 85 %, download.
Q6: Will quality drop on re-save?
Re-saving JPEG at same quality loses <1 %, but avoid ten saves.
Next move
Open iLoveIMG Convert.
Drag one photo.
Choose WebP 75 %.
Download.
You just cut 70 % of weight and your site loads faster today.
Open iLoveIMG Convert.
Drag one photo.
Choose WebP 75 %.
Download.
You just cut 70 % of weight and your site loads faster today.
YOUR AD GOES HERE